export const actions = {
    changeInfo({commit},obj){
        //如果存在，obj={token:"",username:"",id:""}  删除obj={}
        //修改
        commit("changeInfo",obj);
        //存本地
        if(obj.token){
            sessionStorage.setItem("info",JSON.stringify(obj))
        }else{
            sessionStorage.removeItem("info")
        }    
    }
}